.hljsln {
    position: relative;
    display: block;
    padding-left: 3em !important;
}

.hljsln .ln-bg {
    position: absolute;
    z-index: 1;
    top: 0;
    left: 0;
    width: 2.2em;
    height: 100%;
    border-right: 1px solid #555;
    background: rgba(255, 255, 255, 0.18);
}

.hljsln .ln-num {
    position: relative;
    display: inline-block;
    height: 1em;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.hljsln .ln-num::before {
    position: absolute;
    z-index: 2;
    top: 0;
    right: 0;
    margin-right: 1em;
    color: #777;
    font-style: normal;
    font-weight: normal;
    content: attr(data-num);
}